. >> bret: peter lanza the father of newtown shooter adam lanza claimed his son's body. no word when they were claimed or the plans for a funeral service. it could be months before they produce a final report on the investigation. union influence may be slinking. yet, its power is still significant. shipping in the gulf and northeast ground to a standstill with a possible dock workers strike. correspondent doug mckelway looks at unions within the changing globalized work force. >> 30-day contract extension agreed to by the long shoreman shipman and port operators friday temporarily averts a shutdown of the 14 ports from massachusetts to texas. 14,000 long shoremen still find their jobs threatened by out automation. today it takes one long shoreman to do the works of three we have seen before. >> efficiency and new productivity, machines come in play. people are displaced by that. to maintain cost and come pettive market we have to pay attention to. president obama is beholden to unions. he's made a point of supporting them. >> look at how the unions built the stronger mi